[Discuss-gnuradio] input of DDC?

What is the default input signal frequency of DDC of USRP(1).
1. how I and Q are given to DDC?I Q to same DDC?I Q to two different
DDC's among 4 DDC's?two ADC outputs to single DDC?
2. how to give IF or only real signal to DDC through ADC? what IF
frequency can we select?
3. If two receivers 900/2400 are used simultaneously how will be the
ADC-MUX-DDC configuration?

--
chandu <bckavuri@tatapowersed.com>

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